CN216635644U - Grid type sandwich structure - Google Patents
Grid type sandwich structure Download PDFInfo
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- CN216635644U CN216635644U CN202123124245.XU CN202123124245U CN216635644U CN 216635644 U CN216635644 U CN 216635644U CN 202123124245 U CN202123124245 U CN 202123124245U CN 216635644 U CN216635644 U CN 216635644U
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- sandwich
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
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Abstract
The utility model relates to a grid type sandwich structure, which comprises a plurality of sandwich units which are stacked and combined, wherein each sandwich unit comprises a plurality of filling material layers and fiber reinforced composite material layers which are arranged in a staggered and laminated manner, and is prepared and molded by adopting a vacuum infusion process; the grid type sandwich structure also comprises sandwich unit surface fiber reinforced composite material layers coated on the surfaces of all sandwich units, and also comprises grid type sandwich structure surface fiber reinforced composite material layers integrally coated on the surfaces of the stacked combined sandwich unit structures; the sandwich unit, the sandwich unit surface fiber reinforced composite material layer and the grille type sandwich structure surface fiber reinforced composite material layer are integrally prepared and molded by adopting a vacuum infusion process. The integral structure of the utility model is composed of the outer skin, the grids and the filling materials, and the grids are arranged in a polygonal periodic manner, so that the utility model not only has higher bearing capacity, but also has the functional characteristics of shock absorption, sound insulation, heat protection and the like due to the design of the multiple sandwich layers, and can realize the integration of the structure, the design and the function.
Description
Technical Field
The utility model relates to the technical field of composite materials, in particular to a grid type sandwich structure.
Background
At present, when the composite material for ships and warships has a light weight requirement, a sandwich structure filled with filling materials is often adopted, the filling materials are only used as filling layers, and the performance index of the sandwich structure is only reflected in manufacturability. With the development of composite materials of ship structures, the requirement for further light weight is increasingly remarkable, so that the performance requirement on the filling layer is also improved.
In the past, when the upper skin and the lower skin of a simple sandwich structure do not fully exert the bearing function under the action of load, shear failure of a sandwich layer or shear crack of an interface between the sandwich layer and the skin, buckling of the skin and other failure modes can occur.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to provide a grid-type sandwich structure, which can realize the integration of structure, design and function compared with the traditional sandwich structure, aiming at the defects existing in the prior art.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a grid type sandwich structure comprises a plurality of sandwich units which are stacked and combined, wherein each sandwich unit comprises a plurality of filling material layers and fiber reinforced composite material layers which are arranged in a staggered and laminated mode, and the filling material layers and the fiber reinforced composite material layers are prepared and formed by adopting a vacuum infusion process; the grid type sandwich structure also comprises sandwich unit surface fiber reinforced composite material layers coated on the surfaces of the sandwich units; the grid type sandwich structure also comprises a grid type sandwich structure surface fiber reinforced composite material layer which is integrally coated on the surface of the stacked combined sandwich unit structure; the sandwich unit, the sandwich unit surface fiber reinforced composite material layer and the grid type sandwich structure surface fiber reinforced composite material layer are integrally prepared and molded by adopting a vacuum infusion process.
In the above scheme, the number of the sandwich units is one or more.
In the above scheme, the filling material layer of the sandwich unit is made of one or more of honeycomb, rubber, foam or buoyancy material.
In the above scheme, the fiber reinforced composite material layer of the sandwich unit is made of one or more of a glass fiber reinforced composite material, a carbon fiber reinforced composite material or a quartz fiber reinforced composite material.
In the above scheme, the fiber reinforced composite material layer on the surface of the sandwich unit comprises a plurality of layers of fiber cloth.
In the above scheme, the grid-type sandwich structure surface fiber reinforced composite material layer comprises a plurality of layers of fiber cloth.
In the above scheme, when the fiber cloth is multi-layered, the multi-layered fiber cloth is made of one or more of glass fiber reinforced composite material, carbon fiber reinforced composite material or quartz fiber reinforced composite material.
The utility model has the beneficial effects that:
1. the grid type sandwich structure is formed by stacking and combining a plurality of sandwich units, and the surface of each sandwich unit is coated with a fiber reinforced composite material layer, so that all surfaces of filling materials are coated with fiber reinforced composite materials to form grids, and finally, the surface of the combined sandwich unit structure is integrally coated with the fiber reinforced composite material layer of the grid type sandwich structure surface to form an outer skin.
2. The sandwich unit comprises a plurality of filling material layers and fiber reinforced composite material layers which are arranged in a staggered and laminated mode, the number, the size, the structure and the performance of the sandwich unit can be designed according to the size and the bearing requirements of the grid type sandwich structure, and the sandwich unit is convenient and flexible.
3. Compared with the traditional sandwich structure, the grid type sandwich structure has better bearing performance when reaching the same surface density.
Drawings
The utility model will be further described with reference to the following drawings and examples, in which:
FIG. 1 is a schematic view of a sandwich unit structure of a grid-type sandwich structure according to the present invention;
FIG. 2 is a schematic view of the sandwich unit shown in FIG. 1;
FIG. 3 is a schematic structural view of the grid-type sandwich structure of the present invention;
FIG. 4 is a flow chart of the molding process of the sandwich unit of the present invention;
FIG. 5 is a flow chart of the forming process of the grid-type sandwich structure of the present invention.
In the figure: 100. a grid-type sandwich structure;
10. a core unit; 11. a layer of filler material; 12. a fiber-reinforced composite layer;
20. a fiber reinforced composite material layer on the surface of the sandwich unit;
30. a grid type sandwich structure surface fiber reinforced composite material layer.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
The present invention provides a grid-type sandwich structure 100, which is formed by stacking and combining a plurality of sandwich units 10. As shown in fig. 1, the sandwich unit 10 includes a plurality of filler material layers 11 and fiber reinforced composite material layers 12 which are arranged in a staggered and laminated manner, and is prepared and formed by adopting a vacuum infusion process: and (3) sequentially laminating the cut filling material and the fiber cloth, establishing vacuum, completing resin infusion, and curing to obtain the sandwich unit 10. The size of the sandwich unit 10 may be designed according to the actual requirements of the grid-type sandwich structure 100; in addition, a series of sandwich units 10 with different bearing capacities can be obtained by designing the size of the filling material and the number of layers of the fiber reinforced composite material and adjusting the types of the filling material and the fiber reinforced composite material according to the requirements of the overall structure. As shown in FIG. 2, the grid-type sandwich structure 100 further comprises a sandwich element surface fiber-reinforced composite material layer 20 coated on the surface of each sandwich element 10. As shown in FIG. 3, the grid-type sandwich structure 100 further comprises a fiber-reinforced composite material layer 30 on the surface of the grid-type sandwich structure, which is integrally wrapped on the surface of the stacked combined sandwich unit structure. The whole of the sandwich unit 10, the sandwich unit surface fiber reinforced composite material layer 20 and the grid type sandwich structure surface fiber reinforced composite material layer 30 are prepared and formed by adopting a vacuum infusion process: after the preparation of the sandwich units 10 is completed, the surface fiber reinforced composite material of the sandwich units is laid on the surfaces of the plurality of sandwich units 10, the sandwich units 10 are stacked and combined according to the structural design, the surface fiber reinforced composite material of the grid type sandwich structure is integrally laid on the outer surface, and then the grid type sandwich structure 100 is prepared by integral vacuum infusion molding.
Further preferably, the filling material layer 11 of the sandwich element 10 is made of one or more of honeycomb, rubber, foam or buoyancy material.
Preferably, the fiber-reinforced composite material layer 12 of the sandwich unit 10 is made of one or more of a glass fiber-reinforced composite material, a carbon fiber-reinforced composite material or a quartz fiber-reinforced composite material.
Preferably, the fiber-reinforced composite material layer 20 on the surface of the sandwich unit includes a plurality of fiber cloths, and when the fiber cloths are multilayered, the multilayered fiber cloths are made of one or more of glass fiber-reinforced composite materials, carbon fiber-reinforced composite materials or quartz fiber-reinforced composite materials.
Preferably, the surface fiber-reinforced composite material layer 30 of the grid-type sandwich structure includes a plurality of layers of fiber cloth, and when the fiber cloth is a plurality of layers, the plurality of layers of fiber cloth are one or more of glass fiber-reinforced composite material, carbon fiber-reinforced composite material or quartz fiber-reinforced composite material.
The grid-type sandwich structure 100 of the present invention is formed by stacking and combining a plurality of sandwich units 10, and the surface of each sandwich unit 10 is coated with a fiber reinforced composite material layer 20 on the surface of the sandwich unit, so that all surfaces of the filling material are coated with the fiber reinforced composite material to form a grid, and finally, the surface of the combined sandwich unit structure is coated with a fiber reinforced composite material layer 30 on the surface of the grid-type sandwich structure to form an outer skin. The structure is wholly composed of an outer skin, a grid and filling materials, the grid is arranged in a polygonal periodic mode, the structure has high bearing capacity, the design of the multiple sandwich layers has the functional characteristics of shock absorption, sound insulation, heat prevention and the like, and the integration of the structure, the design and the function can be achieved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (4)
1. A grid type sandwich structure is characterized by comprising a plurality of sandwich units which are stacked and combined, wherein each sandwich unit comprises a plurality of filling material layers and fiber reinforced composite material layers which are arranged in a staggered and laminated mode, and the filling material layers and the fiber reinforced composite material layers are prepared and formed by adopting a vacuum infusion process; the grid type sandwich structure also comprises sandwich unit surface fiber reinforced composite material layers coated on the surfaces of the sandwich units; the grid type sandwich structure also comprises a grid type sandwich structure surface fiber reinforced composite material layer which is integrally coated on the surface of the stacked combined sandwich unit structure; the sandwich unit, the sandwich unit surface fiber reinforced composite material layer and the grid type sandwich structure surface fiber reinforced composite material layer are integrally prepared and formed by adopting a vacuum infusion process.
2. The grid-type sandwich structure according to claim 1, wherein the number of sandwich elements is one or more.
3. The grid-type sandwich structure according to claim 1, wherein the sandwich element surface fiber-reinforced composite material layer comprises several layers of fiber cloth.
4. The grid-type sandwich structure according to claim 1, wherein the grid-type sandwich structure surface fiber-reinforced composite material layer comprises several layers of fiber cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123124245.XU CN216635644U (en) | 2021-12-13 | 2021-12-13 | Grid type sandwich structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123124245.XU CN216635644U (en) | 2021-12-13 | 2021-12-13 | Grid type sandwich structure |
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| Publication Number | Publication Date |
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| CN216635644U true CN216635644U (en) | 2022-05-31 |
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| CN202123124245.XU Active CN216635644U (en) | 2021-12-13 | 2021-12-13 | Grid type sandwich structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117141012A (en) * | 2023-10-31 | 2023-12-01 | 廊坊市飞泽复合材料科技有限公司 | Foam material reinforcing method |
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2021
- 2021-12-13 CN CN202123124245.XU patent/CN216635644U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117141012A (en) * | 2023-10-31 | 2023-12-01 | 廊坊市飞泽复合材料科技有限公司 | Foam material reinforcing method |
| CN117141012B (en) * | 2023-10-31 | 2024-05-24 | 廊坊市飞泽复合材料科技有限公司 | Foam material reinforcing method |
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